Medial Meniscal Tears in Anterior Cruciate Ligament- Defi cient Knees: Effects of Posterior Tibial Slope on Medial Meniscal Tear
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Purpose: To evaluate the incidence of meniscal tears in patients with chronic anterior cruciate ligament (ACL) -defi cient knees, and to determine the infl uence of posterior tibial slope (PTS) on medial meniscal tears in ACL-defi cient knees. Materials and Methods: We reviewed 174 patients (174 knees) with a mean age of 30.7 years who underwent ACL reconstruction for chronic ACL tears. We divided the patients into two groups: low group (135 knees with a PTS<13o) and high group (39 knees with a PTS≥13o). Results: Th e incidence of medial meniscus tears was 44% (77/174), and that of lateral meniscus tears was 35% (61/174). Th e mean PTS in patients with medial meniscal tears was 11.4o±3.0o, whereas that in patients without medial meniscal tears was 9.8o±2.4o. Th e incidence of meniscal tears was 57.8% (78/135) in the low group and 89.7% (35/39) in the high group (p<0.001). Conclusions: Our data demonstrate that PTS≥13o is a risk factor for secondary medial meniscal tears in ACL-defi cient knees. So, we suggest that PTS is one of the considerations for determining early ACL reconstruction to prevent secondary meniscal tears.
Abstract
Purpose: To evaluate the incidence of meniscal tears in patients with chronic anterior cruciate ligament (ACL) -defi cient knees, and to determine the infl uence of posterior tibial slope (PTS) on medial meniscal tears in ACL-defi cient knees. Materials and Methods: We reviewed 174 patients (174 knees) with a mean age of 30.7 years who underwent ACL reconstruction for chronic ACL tears. We divided the patients into two groups: low group (135 knees with a PTS<13o) and high group (39 knees with a PTS≥13o). Results: Th e incidence of medial meniscus tears was 44% (77/174), and that of lateral meniscus tears was 35% (61/174). Th e mean PTS in patients with medial meniscal tears was 11.4o±3.0o, whereas that in patients without medial meniscal tears was 9.8o±2.4o. Th e incidence of meniscal tears was 57.8% (78/135) in the low group and 89.7% (35/39) in the high group (p<0.001). Conclusions: Our data demonstrate that PTS≥13o is a risk factor for secondary medial meniscal tears in ACL-defi cient knees. So, we suggest that PTS is one of the considerations for determining early ACL reconstruction to prevent secondary meniscal tears.
참고문헌 (15)
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